Question

Lapland why, tungsten 15 useu for making me
C. A resistance of 25.12 is connected to a 12V battery. Calculate the heat energy in
joules generated per minute.
d. Which kind of mirror is used in the headlights of a car? Why is it used for this
purpose?
e. A concave mirror has a focal length of 4cm and an object 2cm tall is placed 9cm
away from it. Find the nature, position and size of the image formed.
3. Each question contains 4 marks each.
a. What do you understand by the power of a lens? Name one factor on which the
power of a lens depends. What is the unit of power of a lens? Define the unit of
power of a lens.
b. A bulb is rated at 2001 - 100W. What is its resistance? Five such bulbs burn for
4 hours? What is the electrical energy consumed? Calculate the cost if the rate is
Rs. 4.60 per unit.
What is the advantage of using a convex mirror as a rear view mirror in vehicles
as compared to a plane mirror? Illustrate your answer with the help of labelled
diagrams.
CTION – B (CHEMISTRY)
[27 MARKS]
C.
1. Multiple Choice Questions. Each question contains 1 marks each.
a. Which of the following metals fails to evolve hydrogen with dilute HCL?
Zinc​

Answer 1

Answer:

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Answer 2

Answer:

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